This general info ( - without specific names) is already in the public domain.

There are specialist departments in endocrinology at:

1) Birmingham's Queen Elizabeth Hosp (QEH)., and

2) Sheffield's Royal Hallamshire Hospital (RHH).

You may get the best advise that is available in the NHS at either - but I suspect both are inclined towards T4 only therapy. Posts on this forum from earlier this year suggested a degree of dissatisfaction with the service from QEH. Take notice of those to the extent you feel is appropriate.

Hoping you find the medical guidance you are seeking and would clearly benefit from.

I'd also suggest having a look at "The Thyroid Solution" by Prof Ridha Arem . . . . which discusses matters in a way accessible to the lay reader.